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   &#160;<span id="projectnumber">2.2.1</span>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<!-- doxytag: class="b2ChainShape" --><!-- doxytag: inherits="b2Shape" -->
<p><code>#include &lt;<a class="el" href="b2_chain_shape_8h_source.html">b2ChainShape.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for b2ChainShape:</div>
<div class="dyncontent">
 <div class="center">
  <img src="classb2_chain_shape.png" usemap="#b2ChainShape_map" alt=""/>
  <map id="b2ChainShape_map" name="b2ChainShape_map">
<area href="classb2_shape.html" alt="b2Shape" shape="rect" coords="0,0,95,24"/>
</map>
 </div></div>

<p><a href="classb2_chain_shape-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8c032394f5a85e7fc425a437e7689a18"></a><!-- doxytag: member="b2ChainShape::~b2ChainShape" ref="a8c032394f5a85e7fc425a437e7689a18" args="()" -->
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a8c032394f5a85e7fc425a437e7689a18">~b2ChainShape</a> ()</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The destructor frees the vertices using b2Free. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#ac257742a52cac391e25962a4c703fb06">CreateLoop</a> (const <a class="el" href="structb2_vec2.html">b2Vec2</a> *vertices, int32 count)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#aa0977339b743c05f2179939ccc38e7e0">CreateChain</a> (const <a class="el" href="structb2_vec2.html">b2Vec2</a> *vertices, int32 count)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#aeb2ddbe0c52a98885e91b7c8f597315b">SetPrevVertex</a> (const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;prevVertex)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a15c7c2821a52266ef57621ac7d34a95f">SetNextVertex</a> (const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;nextVertex)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a651a039aa4584e48df91db8108729bfa"></a><!-- doxytag: member="b2ChainShape::Clone" ref="a651a039aa4584e48df91db8108729bfa" args="(b2BlockAllocator *allocator) const " -->
<a class="el" href="classb2_shape.html">b2Shape</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a651a039aa4584e48df91db8108729bfa">Clone</a> (<a class="el" href="classb2_block_allocator.html">b2BlockAllocator</a> *allocator) const </td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Implement <a class="el" href="classb2_shape.html">b2Shape</a>. Vertices are cloned using b2Alloc. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a44bd58b9602dbe57cdfc3b66f8f03b61">GetChildCount</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a614e630221ac7f19257c9351edf4bd12"></a><!-- doxytag: member="b2ChainShape::GetChildEdge" ref="a614e630221ac7f19257c9351edf4bd12" args="(b2EdgeShape *edge, int32 index) const " -->
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a614e630221ac7f19257c9351edf4bd12">GetChildEdge</a> (<a class="el" href="classb2_edge_shape.html">b2EdgeShape</a> *edge, int32 index) const </td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Get a child edge. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a4fc27b41ecc556985efacf8e0f91c39f">TestPoint</a> (const <a class="el" href="structb2_transform.html">b2Transform</a> &amp;transform, const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;p) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a85c7a17a15581e0e258c7af561cf5403"></a><!-- doxytag: member="b2ChainShape::RayCast" ref="a85c7a17a15581e0e258c7af561cf5403" args="(b2RayCastOutput *output, const b2RayCastInput &amp;input, const b2Transform &amp;transform, int32 childIndex) const " -->
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a85c7a17a15581e0e258c7af561cf5403">RayCast</a> (<a class="el" href="structb2_ray_cast_output.html">b2RayCastOutput</a> *output, const <a class="el" href="structb2_ray_cast_input.html">b2RayCastInput</a> &amp;input, const <a class="el" href="structb2_transform.html">b2Transform</a> &amp;transform, int32 childIndex) const </td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Implement <a class="el" href="classb2_shape.html">b2Shape</a>. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a409c21206e4c84f66700809aac5b164c">ComputeAABB</a> (<a class="el" href="structb2_a_a_b_b.html">b2AABB</a> *aabb, const <a class="el" href="structb2_transform.html">b2Transform</a> &amp;transform, int32 childIndex) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a009259d589abebeda27fe580d117b11e">ComputeMass</a> (<a class="el" href="structb2_mass_data.html">b2MassData</a> *massData, float32 density) const </td></tr>
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a481116a6886fb3880b13e55c966579da"></a><!-- doxytag: member="b2ChainShape::m_vertices" ref="a481116a6886fb3880b13e55c966579da" args="" -->
<a class="el" href="structb2_vec2.html">b2Vec2</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#a481116a6886fb3880b13e55c966579da">m_vertices</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The vertices. Owned by this class. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab2ad711781e6ac81179074e90e0e058b"></a><!-- doxytag: member="b2ChainShape::m_count" ref="ab2ad711781e6ac81179074e90e0e058b" args="" -->
int32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classb2_chain_shape.html#ab2ad711781e6ac81179074e90e0e058b">m_count</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">The vertex count. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3a42d4c6b2421bc5badda3b6164949cf"></a><!-- doxytag: member="b2ChainShape::m_prevVertex" ref="a3a42d4c6b2421bc5badda3b6164949cf" args="" -->
<a class="el" href="structb2_vec2.html">b2Vec2</a>&#160;</td><td class="memItemRight" valign="bottom"><b>m_prevVertex</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af3716ef780dd5bcd905e350d8854aaa2"></a><!-- doxytag: member="b2ChainShape::m_nextVertex" ref="af3716ef780dd5bcd905e350d8854aaa2" args="" -->
<a class="el" href="structb2_vec2.html">b2Vec2</a>&#160;</td><td class="memItemRight" valign="bottom"><b>m_nextVertex</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8a6ffbb9de0e2b8545c8b4fc8aa77249"></a><!-- doxytag: member="b2ChainShape::m_hasPrevVertex" ref="a8a6ffbb9de0e2b8545c8b4fc8aa77249" args="" -->
bool&#160;</td><td class="memItemRight" valign="bottom"><b>m_hasPrevVertex</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a333b74486566e73c3cf1f7da5e69a96e"></a><!-- doxytag: member="b2ChainShape::m_hasNextVertex" ref="a333b74486566e73c3cf1f7da5e69a96e" args="" -->
bool&#160;</td><td class="memItemRight" valign="bottom"><b>m_hasNextVertex</b></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A chain shape is a free form sequence of line segments. The chain has two-sided collision, so you can use inside and outside collision. Therefore, you may use any winding order. Since there may be many vertices, they are allocated using b2Alloc. Connectivity information is used to create smooth collisions. WARNING: The chain will not collide properly if there are self-intersections. </p>
</div><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a409c21206e4c84f66700809aac5b164c"></a><!-- doxytag: member="b2ChainShape::ComputeAABB" ref="a409c21206e4c84f66700809aac5b164c" args="(b2AABB *aabb, const b2Transform &amp;transform, int32 childIndex) const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::ComputeAABB </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structb2_a_a_b_b.html">b2AABB</a> *&#160;</td>
          <td class="paramname"><em>aabb</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="structb2_transform.html">b2Transform</a> &amp;&#160;</td>
          <td class="paramname"><em>transform</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32&#160;</td>
          <td class="paramname"><em>childIndex</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const<code> [virtual]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classb2_shape.html#a88e9807fab0c8ca9a98d8926e50a1411">b2Shape::ComputeAABB</a> </dd></dl>

<p>Implements <a class="el" href="classb2_shape.html#a88e9807fab0c8ca9a98d8926e50a1411">b2Shape</a>.</p>

</div>
</div>
<a class="anchor" id="a009259d589abebeda27fe580d117b11e"></a><!-- doxytag: member="b2ChainShape::ComputeMass" ref="a009259d589abebeda27fe580d117b11e" args="(b2MassData *massData, float32 density) const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::ComputeMass </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structb2_mass_data.html">b2MassData</a> *&#160;</td>
          <td class="paramname"><em>massData</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float32&#160;</td>
          <td class="paramname"><em>density</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const<code> [virtual]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>Chains have zero mass. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classb2_shape.html#a61b365526241b47f124789b0309cac69">b2Shape::ComputeMass</a> </dd></dl>

<p>Implements <a class="el" href="classb2_shape.html#a61b365526241b47f124789b0309cac69">b2Shape</a>.</p>

</div>
</div>
<a class="anchor" id="aa0977339b743c05f2179939ccc38e7e0"></a><!-- doxytag: member="b2ChainShape::CreateChain" ref="aa0977339b743c05f2179939ccc38e7e0" args="(const b2Vec2 *vertices, int32 count)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::CreateChain </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="structb2_vec2.html">b2Vec2</a> *&#160;</td>
          <td class="paramname"><em>vertices</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>Create a chain with isolated end vertices. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table class="params">
    <tr><td class="paramname">vertices</td><td>an array of vertices, these are copied </td></tr>
    <tr><td class="paramname">count</td><td>the vertex count </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a class="anchor" id="ac257742a52cac391e25962a4c703fb06"></a><!-- doxytag: member="b2ChainShape::CreateLoop" ref="ac257742a52cac391e25962a4c703fb06" args="(const b2Vec2 *vertices, int32 count)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::CreateLoop </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="structb2_vec2.html">b2Vec2</a> *&#160;</td>
          <td class="paramname"><em>vertices</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>Create a loop. This automatically adjusts connectivity. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table class="params">
    <tr><td class="paramname">vertices</td><td>an array of vertices, these are copied </td></tr>
    <tr><td class="paramname">count</td><td>the vertex count </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a class="anchor" id="a44bd58b9602dbe57cdfc3b66f8f03b61"></a><!-- doxytag: member="b2ChainShape::GetChildCount" ref="a44bd58b9602dbe57cdfc3b66f8f03b61" args="() const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int32 b2ChainShape::GetChildCount </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const<code> [virtual]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classb2_shape.html#a05a3c445017d96df9238ceefe6ce37ab" title="Get the number of child primitives.">b2Shape::GetChildCount</a> </dd></dl>

<p>Implements <a class="el" href="classb2_shape.html#a05a3c445017d96df9238ceefe6ce37ab">b2Shape</a>.</p>

</div>
</div>
<a class="anchor" id="a15c7c2821a52266ef57621ac7d34a95f"></a><!-- doxytag: member="b2ChainShape::SetNextVertex" ref="a15c7c2821a52266ef57621ac7d34a95f" args="(const b2Vec2 &amp;nextVertex)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::SetNextVertex </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;&#160;</td>
          <td class="paramname"><em>nextVertex</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>Establish connectivity to a vertex that follows the last vertex. Don't call this for loops. </p>

</div>
</div>
<a class="anchor" id="aeb2ddbe0c52a98885e91b7c8f597315b"></a><!-- doxytag: member="b2ChainShape::SetPrevVertex" ref="aeb2ddbe0c52a98885e91b7c8f597315b" args="(const b2Vec2 &amp;prevVertex)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void b2ChainShape::SetPrevVertex </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;&#160;</td>
          <td class="paramname"><em>prevVertex</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>Establish connectivity to a vertex that precedes the first vertex. Don't call this for loops. </p>

</div>
</div>
<a class="anchor" id="a4fc27b41ecc556985efacf8e0f91c39f"></a><!-- doxytag: member="b2ChainShape::TestPoint" ref="a4fc27b41ecc556985efacf8e0f91c39f" args="(const b2Transform &amp;transform, const b2Vec2 &amp;p) const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">bool b2ChainShape::TestPoint </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="structb2_transform.html">b2Transform</a> &amp;&#160;</td>
          <td class="paramname"><em>transform</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="structb2_vec2.html">b2Vec2</a> &amp;&#160;</td>
          <td class="paramname"><em>p</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const<code> [virtual]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">
<p>This always return false. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classb2_shape.html#a6ac968e403e2d93e8ae46d728a2e50fa">b2Shape::TestPoint</a> </dd></dl>

<p>Implements <a class="el" href="classb2_shape.html#a6ac968e403e2d93e8ae46d728a2e50fa">b2Shape</a>.</p>

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<hr/>The documentation for this class was generated from the following files:<ul>
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